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MDEV-11571 JSON_EXTRACT returns wrong results.

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Array counter didn't increment after an item was found.
This commit is contained in:
Alexey Botchkov
2016-12-24 10:51:43 +04:00
parent bbb3fb318e
commit 4d10273b4f
3 changed files with 5 additions and 4 deletions
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3
mysql-test/r/func_json.result
View File

@ -209,6 +209,9 @@ json_extract('[10, 20, [{"a":3}, 30, 40]]', '$[2][*]')
select json_extract('1', '$');
json_extract('1', '$')
1
select json_extract('[10, 20, [30, 40], 1, 10]', '$[1]');
json_extract('[10, 20, [30, 40], 1, 10]', '$[1]')
20
select json_insert('{"a":1, "b":{"c":1}, "d":[1, 2]}', '$.b.k1', 'word');
json_insert('{"a":1, "b":{"c":1}, "d":[1, 2]}', '$.b.k1', 'word')
{"a":1, "b":{"c":1, "k1":"word"}, "d":[1, 2]}

1
mysql-test/t/func_json.test
View File

@ -77,6 +77,7 @@ select json_extract(json_object('foo', 'foobar'),'$');
select json_extract('[10, 20, [30, 40]]', '$[2][*]');
select json_extract('[10, 20, [{"a":3}, 30, 40]]', '$[2][*]');
select json_extract('1', '$');
select json_extract('[10, 20, [30, 40], 1, 10]', '$[1]');
select json_insert('{"a":1, "b":{"c":1}, "d":[1, 2]}', '$.b.k1', 'word');
select json_insert('{"a":1, "b":{"c":1}, "d":[1, 2]}', '$.d[3]', 3);

5
strings/json_lib.c
View File

@ -1270,7 +1270,7 @@ int json_find_path(json_engine_t *je,
case JST_VALUE:
DBUG_ASSERT(cur_step->type & JSON_PATH_ARRAY);
if (cur_step->type & JSON_PATH_WILD ||
cur_step->n_item == array_counters[cur_step - p->steps])
cur_step->n_item == array_counters[cur_step - p->steps]++)
{
/* Array item matches. */
if (cur_step == p->last_step ||
@ -1278,10 +1278,7 @@ int json_find_path(json_engine_t *je,
goto exit;
}
else
{
json_skip_array_item(je);
array_counters[cur_step - p->steps]++;
}
break;
case JST_OBJ_END:
case JST_ARRAY_END: